dessau



.SHEVETS-SHEET l Feb. 20, 192,3.

M.,|v|. DESSAU. AIR BED, cUsH|oN. AND THE L|KE.

man JULY 25.1922.

Feb. 2o, 1.923.;

M. M.nEssAu yMR BED, CUSHION, AND THE LIKE.

2 SHEETS-SHEET 2.

meh mu 25.1922.

Patented F eb. 20, 1923.

UNITED STATES MORLAND MICHOLL DnssAU,y or lLONDON, ENGLAND.

am BED, CUSHION, AND THE LIKE.

Application led .Tuly 25,'

To all whom t may concern.'

Be it known that l, MORLAND MIoHoLL DESSAU, a citizen of the United States of America, residing at London, England, have invented Improvements in or Relating to Air Beds, Cushions, and the like, of which the following is a specification.

This invention relates to air beds, c-ush ions and the like. Ordinarily devices of this class are open to the objection that in use the support afforded is more or less of an unstable or rolling character, whilst the result of a puncture or single leak is to render the device practically valueless for the purpose intended.

To overcome these disadvantages various proposals have been made, employing a system of independently inflatable units.

The object of the present invention is to provide improved forms of air bed, cushion or the like of the kind in which tubular re- S'lient supporting units, whether they be inflatable or not, are independent of a cover and adapted to be inserted in pocketsof the latter which alternate with other pockets containing stufling material serving to separate one from another.

The principal new feature of `importance of the present invention consists in using independent units as aforesaid enclosed in alternate pockets, each of which is of such a size and constituted by walls extending between the upper and lower layers of the covering that the presence of the units in their pockets normally acts to produce a lateral compression of the stuffing material in adjacent pockets. Thus in the event of failure of any such unit, the stuffing material compressed thereby will tend to fiow and avoid the formation of a dead space as heretofore. 'f

But in order that the invention may be` more readily understood it will now be further described with the aid of the accompanying drawings of which Fig. 1 is a plan view of a portion of a mattress showing one embodiment.

Figs. 2, 3 and 4 are views to a larger scale of details.

Fig. 4 represents a modification.

Fig. 5 is a part sectional side elevation corresponding to Fig. 1.

Figs. 6 and 7 are Views illustrative of the manner of producing a filling for such a mattress.

Fig. 8 is a perspective view of a similar 1922. Serial No. 577,474.

mattressshowing a further modification and F ig. Slis a view showing a part of Fig. 8 in cross section.

Referring to Figs. l and 5 a tick a is subdivided by wfalls soas to form cells for the reception of air vtubes c, of which one is shown in Fig. 2, and also cells for the reception of a suitable stuffing d. In Fig. 5 an outer tick c is shown as separated from the inner tick a by a layer f of material at both sides of the latter.

The stuffing d may be of any suitable kind as already referred to but kapok will be found very suitable especially if, as shown in Fig. 6, tufts gthereof be interposed between two strands z, formed of crpe rubber appropriately twisted, the said strands being themselves subsequently twisted together as indicated more or less approximately in Fig. 7.' Rubber in other forms such as the well known spongy form or soft nitrated rubber may be used as a filling not only for the cells between the tubes but also like the previously mentioned materials, for the said tubes which it then becomes optional to make air tight or not. Fig. 4E shows a tube thus lled with resilient stuffing material. In an analogous fashion hollow tubular or solid `rodlike elements initially made of rubber alone'or in conjunction with other materials such as the elements described with reference to Figs. 6 and 7 may be inserted between other stufling. A mattress of such a character will be found extremely buoyant, and-useful therefore as a life saver on board ship, but in this case it is desirable to arrange for a greater amount of stiffness than is naturally present. `This may be achieved by embedding in the stuffing light canes z' Figs. l, 3 and 5` arranged parallel to the air tubes c or, as shown in Figs. 8 and-9 by longitudinal canes or stiffeners j. From these figures also it will be understood how a marginal tubino all round the mattress might be employed if desired.

lVhere transverse stifl'eners such as z' are employed the air tubes may be attached at their endsv to the tick a so that there is a tendency to keep them in tension and produce a hammock like effect.

l. A device of the kind described comprising a cover having an upper and a lower layer of flexible material flexible walls eX- tending between said layers dividing the same `into pockets of a width approximating to the distance separating the layers, alternating with pocketsoi a much greater width, resilient tubular members independently inserted in the smaller pockets and resilient stutiing material inserted in the wider pockets, substantially as described.

2. A device oi' the kind described comprisinga cover having an upper and lower layer of flexible material, flexible walls eX- tending between said layers dividing the same into pockets of a width approximately to the distance separating the layers, alten nating with pockets of a much greater width7 resilient tubular members independently inserted in the smaller pockets, resilient stmt"- ing material inserted in the wider pockets and stiilfeners, arranged parallel to the pockets, embedded in said stuffing material, substantially as described.

A device of the kind described c0mprsing a cover, divided transversely into pockets, stuffing material inserted in alternate pockets, resilient tubular members in adjacent pockets, transverse stiifeners embedded in the stutling material and stitfeners arranged at longitudinal margins of the cover, substantially as described.

il. In a device of the kind described, a iilling comprising two strands of twisted crpe rubber, and tufts of fibre as kapok interposed therebetween, the said individual strands beingtherewith appropriately twisted together to comprise the tu'lts, substantially as described.

Signed at London, England, this 12th day oi' July, 1922.

MORLAND MICHOLL DESSAU. 

